1SDA057339R1 ABB E2N-A 1600 PR121/P-LSI 1600A 3P Air Circuit Breaker

Why Choose the ABB E2N-A 1600 PR121/P-LSI 1600A 3P Air Circuit Breaker?

The ABB E2N-A 1600 PR121/P-LSI, order code 1SDA057339R1, is a high-current SACE Emax air circuit breaker (ACB) designed for protection, switching and isolation in demanding low-voltage power distribution systems. Built on the ABB E2N-A platform, this three-pole breaker has a rated current of 1600 A and is suited to major industrial, commercial and infrastructure distribution circuits.

The breaker is equipped with an ABB PR121/P-LSI electronic overcurrent release, providing long-time, short-time and instantaneous protection. This LSI protection arrangement helps safeguard cables, busbars, switchgear and connected equipment against sustained overloads and short-circuit currents while supporting coordinated protection throughout the electrical distribution network.

With its three-pole configuration, 1600 A rated current and N performance level, the E2N-A 1600 PR121/P-LSI provides dependable high-current circuit protection for main incomers and distribution feeders. ABB's SACE Emax platform combines robust switching performance with electronic protection for critical low-voltage installations.

Key Advantages

• High-capacity 1600 A SACE Emax air circuit breaker for major distribution circuits.
• Three-pole configuration for three-phase low-voltage systems.
• Advanced PR121/P-LSI electronic overcurrent release.
• LSI functionality provides long-time, short-time and instantaneous protection.
• Short-time protection supports coordination with downstream protective devices.
• N performance level for demanding power distribution applications.
• Electronic trip technology provides dependable high-current circuit protection.
• Suitable for main incomer and feeder protection in industrial switchboards.

Key Features

• ABB SACE Emax E2N-A air circuit breaker.
• 1600 A rated current.
• Three-pole (3P) configuration.
• PR121/P-LSI electronic protection release.
• Long-time (L) overload protection.
• Short-time (S) short-circuit protection.
• Instantaneous (I) short-circuit protection.
• N short-circuit performance level.
• Electronic overcurrent protection for critical distribution circuits.
• Suitable for selective protection strategies within low-voltage networks.
• Designed for industrial and commercial power distribution systems.

Reliable LSI Protection for High-Current Power Distribution

Air circuit breakers such as the ABB SACE Emax E2N-A provide switching, isolation and overcurrent protection for major low-voltage distribution circuits. The PR121/P electronic release monitors circuit current and initiates tripping when configured protection thresholds are exceeded, helping protect electrical infrastructure from damaging overload and short-circuit conditions.

The PR121/P-LSI release combines long-time protection against sustained overloads with short-time and instantaneous short-circuit protection. The short-time function provides additional flexibility for coordinating upstream and downstream protective devices, helping improve selectivity and reduce unnecessary interruption of unaffected sections of the distribution system.

Typical Applications

• Industrial low-voltage switchboards.
• Main incomer circuit protection.
• High-current distribution feeders.
• Manufacturing and process plants.
• Commercial building power distribution.
• Infrastructure electrical systems.
• Transformer secondary distribution.
• Power distribution centres and switchgear assemblies.